One of the great things about routers with dynamic routing
is they have a routing table with stuff,
and they can make forwarding decisions.
It's great.
However, occasionally as an administrator or an engineer,
we may need to go to a router and say, listen,
I know you've got a beautiful routing table,
I know you know how to route, however, I
need to change the rules based on a certain set of conditions.
Maybe traffic coming from a certain source IP address
or going to a certain destination address,
override your default routing tables as far as its decisions
and forward it this way, no matter what. WEBVTT X-TIMESTAMP-MAP=LOCAL:00:00:00.000,MPEGTS:900000
and forward it this way, no matter what.
That concept is called PBR, policy based routing.
And in this set of videos, I'd like
to walk you through that concept, including
the ingredients that go into it, which often include an access
control list to identify the traffic that's
going to be treated, special and also a device
called a route map that's going to give
the instructions of what to do different
when it sees that traffic.
So all that and more is coming up in this set of videos,
including some hands on labs.
So I'll see you, my friend, in the very next video.